Answer:
b. to alert communities to potential health risks
Explanation:
Vog is defined as the form of air pollution which is caused by the emission of sulfur dioxide and other particles formed due to reaction of oxygen and moisture with volcanic gases in the presence of sunlight.
Scientists or volcanologist study vog to save life of people around the volcanic sites. As volcanic eruption can cause several helath risks<em> such as suffocation, respiratory problems, skin diseases, eye injuries and conjunctivitis.</em>
So, They predict the health risk by evaluating different gases in the vog and alert people to take precautions to be safe.
Hence, the correct option is b.
